Gas-heater



L. LEB'AU.

GAS HEATER.

APPLICATION FILED AUG.19. 1919.

1 ,342, 12 1 Patented June 1, 1920 unites stares GAS-HEATER.

Specification of Letters Patent.

Patented June 1, 1920.

Application filed August 19, 1919. Serial No. 318,600.

To all whom it may concern:

Be it known that I, LOUIS LEBAU, a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Gas- Heaters, of which the following is a specification.

This invention relates to gas heaters and more specifically to that type generally known as portable heaters or radiators, which maybe carried from room to room or placed where desired and readily connected with the source of gas supply.

The object of the invention is to provide a heater of the type hereinafter described which is simple in construction, consisting of substantially few parts, and which may be manufactured at a low cost due to the simplicity and small number of parts.

Another object is to provide a heater, the parts of which may be readily assembled or disassembled, permitting replacement or substitution when necessary.

Another object is to provide a heater which will permit of the radiation of a maximum amount of heat due to the special construction of the parts.

A further object is to provide a gas heater or radiator with means for guarding or protecting the radiating plate from contact thus making the heater safe against burning of clothing or exposed parts of the body.

Referring now to the accompanying drawings forming a part of this specification,

Figure 1 is a side elevation of the heater;

Fig. 2 is an end view thereof;

Fig. 3 is a vertical section on the line of Fig. 1;

Fig. 4 is a longitudinal section on the line 44 of Fig. 3;

Fig. 5 is a detail of the mixing valve on the line 55 of Fig. 4, and

Fig. 6 is a top plan view of a portion of the radiating plate.

Referring to the drawings more specifically by numerals of reference, as shown by Figs. 1 to 4, the heater comprises end supporting cast metal plates 1, each. of which is identical in form, having their lower portions constructed to form legs 2 and their upper portions 3 substantially circular, the latter being formed with outwardly extending circular depressions 4 spaced from the rims 5 of the portions 3.

The walls 5 of said depressed portions 4 are provided with an annular series'of openings 6, thereby forming apertured extensions which permit of the entrance of air from the room into the hollow radiating member hereinafter described, and escape of the heated air from within such member. Arranged adjacent the walls 5 of the depressed portions 4, but inwardly disposed are integral flanges 7 generally of an inverted U-shape, these flanges serv-' 1 ing to support the radiating or heating plate generally designated by the numeral 8. The radiating plate member consists of separable sections 8 and 8 of cast metal,

which when the heater is assembled, as

shown more clearly in Fig. 3, constitute a unitary upwardly curved plate generally of an inverted U-shape the ends of wihich rest upon the U-shaped flanges 7 upon the end supporting plates 1. This construction provides a hollow radiating member which receives all the heat from the burner, which radiating member is open at the bottom as at 9, through which the flames from said burner 18 pass.

The separable sections 8 and 8 are provided respectively with cars 10 and 10 and cooperating threaded apertures, the car 10 of one section overlapping the adjacent edge of the other section and being fastened by screws 11, and vice versa. By this means, the sections together constitute a unitary heating plate. For attachin the heating plateto the end members 1, fprovide upon alternate sections at opposite ends thereof, an car 12 through the medium f which said sections may be connected with the end plates. It will thus be seen that means are provided for detachably connecting the sections and that means are provided for detachably attaching the sec,- tions to the end plates, thus resulting in a rigid structure. The radiating plate 8 is provided with apertures 14 suitably arranged to permit the passage of heat trapped thereunder.

For the purposeof protecting the radiating plate 8 against contact with any object which might result disastrously by fires or burns, I provide a guard of sheet metal 15. This guard which completely covers the radiating plate and burner 18, and which conforms substantially to the outlines of the end plates 1, is supported upon the latter by inwardly directed lugs 16 and an ing plate and the guard respectively.

The burner 18 is longitudinally disposed within the lower portion of the casing formed by the sheet metal guard 15, and below, but adjacent the opening 9 of the curved radiating plate 8. The burner is supported at either end within apertures in the end plates 1, being attached against accidental displacement at its rear end to an end plate by lug 19 and screw 20. A mixing valve 21 shown in Figs. 4 and 5 servesthe usual function of proportioning the gas and air as required. A gas tube 22 leading to a source of gas supply may be connected with the nipple 23. An opening 14' is also provided in the walls of the end plates 1 for the insertion of a taper or match to light the burner 18.

The operation of my heater or radiator will now be understood. The burner 1 having been lighted, the radiating plate 8 is heated to the desired degree, and the heat generated thereby passes through the openings therein and mixes with the air already heated by radiation from the plate 8. The heated air rises and passes out through the perforations in the guard. This causes a current of air to be set up within the heater, cool air entering at the bottom through the space between the inwardly directed flanges 24 and through the air ingress openings in the apertured extensions, passing upwardly thence into the heating space formed between the plate 8 and guard 15, and becoming more highly heated as it passes upwardly until it reaches its maximum degree of heat at the top of the heater, at which time it escapes through the perforated guard and apertured extensions. Although as stated, air heated to the maximum degree will escape at the top as will be evident, and air heated to varying but increasing temperatures will escape through the guard as soon as the lower apertures are reached by the air in its upward passage through the heating space.

Having thus described my invention, what is claimed as new and desired to be protected by Letters Patent is:

1. A heater of the class described, comprising end members, a hollow perforated radiator member supported by the end members, a combined perforated guard and casing member supported on said end memportion conforming generally to the contour of the radiating member and lower side" portions having inwardly directed flanges adapted to form an air opening between the same, and a burner supported by said end members intermediate the side walls of said guard member and adjacent the open bottom of said radiating member.

, 3. A gas heater, comprising end members having outwardly extending portions'pr'ovided with a series of air openings therein, a hollow perforated radiating member supported on said end members and having an open bottom, a combined perforated guard and casing member inclosing said radiating member and supported by said end members around and in spaced relation to said radiating member, and a burner supported by said end members and arranged adjacent the open bottom of said radiating member, said guard comprising an upper portion conforming generally to the contour of the radiating member and lower side portions having inwardly directed flanges adapted to form an air passage between the same, said apertured extensions on said end members being in line and connecting with said radiating member.

l. A heater of the class described, comprising end members, a hollow'perforated radiating member supported by the end members, a combined perforated guard and easing member supported on the end members around and in spaced relation to said radiating member, a burner arranged in said casing member below said radiating member, and extensions extending outwardly' from said end members and connecting said radiating members, said extensions being closed at their ends and provided with apertures in the sides.

In testimony whereof I afiix my signature.

' LOUIS LEBAU. Witness: 7

THOS. TREGANAVAU. 

